serial: add device tree binding documentation for ETRAX FS UART

Signed-off-by: Niklas Cassel <nks@flawful.org>
Signed-off-by: Rob Herring <robh@kernel.org>

2 files changed, 20 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt b/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt
new file mode 100644
index 000000000000..ebcbb62c0a76
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/axis,etraxfs-uart.txt
@@ -0,0 +1,19 @@
+ETRAX FS UART
+
+Required properties:
+- compatible : "axis,etraxfs-uart"
+- reg: offset and length of the register set for the device.
+- interrupts: device interrupt
+
+Optional properties:
+- {dtr,dsr,ri,cd}-gpios: specify a GPIO for DTR/DSR/RI/CD
+  line respectively.
+
+Example:
+
+serial@b00260000 {
+        compatible = "axis,etraxfs-uart";
+        reg = <0xb0026000 0x1000>;
+        interrupts = <68>;
+        status = "disabled";
+};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index db0e94f26149..fae26d014aaf 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -28,6 +28,7 @@ atmel	Atmel Corporation
 auo     AU Optronics Corporation
 avago   Avago Technologies
 avic    Shanghai AVIC Optoelectronics Co., Ltd.
+axis    Axis Communications AB
 bosch   Bosch Sensortec GmbH
 brcm    Broadcom Corporation
 buffalo Buffalo, Inc.